Starting in the late 1970s and. continuing for decades, an increasing amount of the. protective layer of stratospheric ozone above Antarctica. would disappear during late September and October, cre-. ating what is popularly known as the ozone hole.
A battalion is a military unit. The use of the term battalion varies by nationality and branch of service. Typically a battalion consists of 300 to 800 soldiers and is divided into a number of companies. A battalion is typically commanded by a lieutenant colonel. In some countries the word battalion is associated with the infantry. The term was first used in Italian as battaglione no later than the 16th century.
A typical regiment consisted of two battalions, one on duty, the other at home being recruited and trained. The goal was to keep the 1st battalion strength at 800 men. But fighting, sickness, desertion some regiments got down to 100 men. A typical battalion had 5 companies, one was light infantry for skirmishing.